Manjunath

Experience Summary:

·               Overall 14  years of experience in Integration, Development  and System testing  of Datacom, Telecom and Enterprise Software products such as 4GLTE on EPC & IMS network, NFV (Network Function Virtualization), CMTS/Cable Modems, GPON, xDSL, WebNMS & EMS domain.

·               5+ years of experience in Cable Modem Termination System domain

·               Worked on DOCSIS, NFV, 4GLTE, FTTx, SWITCHING, ROUTING and SONET technologies

·               Hands on and knowledge in inter-AS connectivity (eBGP, MPLS), Dynamic and static IP Routing protocols (OSPF, EIGRP, BGP, PIM Multicast)

·               LAN, WLAN and circuits and protocols ( 802.11a/g/n, Access Lists, VLAN’s,)

·               Performed Sanity Integration, Load/Stress Testing, End-to-End Testing, Regression Automation test suite for 4GLTE, DOCSIS, PON devices and WebNMS and EMS applications

·               Hands-on experience in EPC Packet core including PCC domain such as MME, Cisco ASR5500 SGW, PGW,PCEF & PCRF

·               Developed Automation scripts & test execution for various vendors (AT&T, Motorola, Alcatel-Lucent) on various scripting Languages like Perl, Nemo, IPNET, Shell Scripts and TCL/TK (Learning Python & JavaScript) .

·               Hands on experiene on Network management and Provisioning (SNMP, CLI, TL1 and XML)

·               Working experience on NFV platform on routing, application bench marking, manual and automation test suite

·               Manual & automated testing experience on Web NMS & EMS application, API, Inventory, billing, Security and Provisioning related web applications and also supporting and testing Northbound & Southbound interfaces  for Network Management Framework (FCAPS)

·               Experience on Database concepts, Data modelling, SQL and middleware such as CORBA, SOAP over HTTP

·               Working experience on Object Oriented design, Core JAVA, automated code generation development environment on cross-functional platforms

·               Strong working knowledge of ‘C’ , C++, Core Java on Integrity RTOS, VxWorks and Unix/Linux platform

·               Performed as Technical Lead and thorough understanding about planning, resource allocation and coordinating for new feature/release Development, Unit, Integration and System Test phases             

·               Performed Cable Labs Certification test plan execution and network set-up for DOCSIS & CPE devices

·               Performed Data throughput testing using IXIA

·               Strong platform debugging skills and ability to provide rapid root-cause analysis of various customer issues and system crash analysis

·               Performed protocol captures and trace log analysis using different network analyzer tools such as Wire Shark, Iris and RF Snipper and Development tools such as Multi, GDB to read network traces to understand the failure reasons

·               Strong working knowledge on SDLC, Agile & waterfall methodology, configuration management like Clearcase, CVS and RCS

·               Defects tracking & closure using HP - Quality Center and Bug tracking tools such as Clear Quest, Bugzilla

·               Have single handedly led and coordinated projects, prior responsibility reflects good leadership qualities, team player with excellent interpersonal skills

 

ACADEMICS

Bachelor of Engineering in Electronics and Communication from UBDTCE, Davanagere, Kuvempu University, India.

TECHNICAL Skills SUMMARY

Telecom Protocols:LTE EPC Core (MME, SGW GPW, HSS), PCEF, PCRF (Gx and Rx), DIAMETER

   & Domain            (Cx and Sh), IMS, MSP, SDP, RTP, RTCP, IPv6, DOCSIS 3.0/2.0, LAG, DHCP Relay,

                                           MPLS, TCP/IP, Multicast, IGMP, RADIUS, GPON, SOAP

Languages:C, C++, Core JAVA, XML, SQL, JavaScript, CORBA, SOAP

Dev Tools:JSWAT, JTEST, JUNIT, Green Hills Multi, Klocwork, Debugger gdb, VECTORCAST,

                                          Epilogue’s Envoy SNMP tools, MG-SOFT MIB browser/compiler, make, XML Spy

Test Tools: Spirent Test Center, IXIA/IXLOAD, Tektronix IRIS Session Analyzer, Wireshark,

                                         RF Snipper

Scripting Tools:Perl, Nemo, IPNET, TCL and Python

 

 

PROFESSIONAL EXPERIENCE

 

AT&T Inc, CA USA                                                                                          Dec’13 to till date               

Role        : Validation of 4GLTE devices on EPC and IMS network

Project    : AT&T Network Planning & Data Service Engineering

Exposure: LTE EPC (Cisco ASR5500), MSP (Ericsson), PCRF/PCEF (Cisco), Juniper MX960 Router, HP-QC, Tektronix IRIS Session Analyzer, Snooper, Call Flow Analysis & reviews, Log Analysis

                           Responsibilities:

·               Validation of 4GLTE devices on EPC and IMS network. Performed end-to-end testing, call flow testing on network

·               Corresponding with clients/higher management for coordinating, risk mitigation, planning and estimation of project

·               Working with various platform owners to accomplish LTE lab deployment and coordinate testing as well as troubleshooting

·               Perform protocol captures and trace log analysis using different network analyzer tools such as WireShark, IRIS.

·               Develop Services Oriented E2E Regression/Validation Test Plans for the new platform  & call flows

·               Supporting Laye 3 testing, RAN Testing & Device Testing configuration

·               Review logs & Call flows for various Data Services on LTE network

·               Tracking  the Test cases and Defects in HP-Quality Center

 

AT&T Labs, NJ USA                                                                                                                               July’13 to Nov 13

Role        : Validation of Network Virtualization for common platform

Project    : AT & T Labs - Network Virtualization Platform

Exposure: vCenter-vsphere client, HP blade Center, Vsphere HA and  vMotion(DRS), Load Balancer (Brocade ADX 10K), Juniper MX960 Router , Cisco 2960 Layer 2 switch, IXLOAD Traffic Generator, Perforamnce & Bench Marking Testing, Alarms/Events Testing, iTest automation framework

Responsibilities:

·               Assembling the test requirements from clients

·               Handling test design, setup and execution

·               Analyzing the result and test reports/graphs

·               Test case design and verification for Virtualization platform routing functionality like route advertisements iBGP, QoS, LAG, traffic filtering, VLAN and Flex Switch

·               Perform Bench marking & capacity testing on NFV platform for applications like DHCP, DNS, RADIUS, and GSTOOL. Test execution for Stress, Load and Performance metrics compared to legacy and NFV platform.

·               Acting as a lead for team members and assisting them technically

 

Motorola Mobility Inc, MA USA                                                                                                Feb 2008 – June 2013

Role        : Integration, Funtionality, Unit Testing and Development

Project    :  Cable Modem Termination System (BSR64000)

Exposure:   Motorola/Arris BSR64000 (SRM10G,RX48, TX32), Incognito, Automation Script Development, CUNIT, SNMP, Klocwork, Cable Certification process, DOCSIS, L2 and L3 protocols, IXIA, Mutli probes

Responsibilities:

·               Participate in Requirement, design reviews of Control and Data plane features of DOCSIS 3.0 feature sets understand/suggest the key changes to project stakeholders

·               Integrated Klocwork (automated) with build process for coding defects and performance improvement

·               Integration testing and development support for Mixed CMTS feature

·               Performed DOCSIS 3.0 Cable Labs Certification testing and supporting SNMP MIBs for Cable Labs Certification

·               Integration testing and Development support for “Cable Traffic Management” feature

·               Development & Integration testing support for RIP over OSPF, LAG support for IPv6, IPv6 implementation for BSR64000 product line, SRM10G (Management & Control Card) , RX48 releases on Control plane & Data plane Software

·               Having knowledge on the L2VPN & L3VPN service

·               Development & Integration test support for Spectrum Management, REP, MAC modules for Redundant DOCSIS in Integretity development environment

·               Build the test environment (nightly build verification) for validating different features & build before start of test execution on Goldie test setup (Golden Configuration)

·                           Identify the required EVTs and Testpoints during Integration test plan design stage for both good and error cases

·               Analysis/Feedback of P1 and P2 (critical and Major) bugs found during testing to update the test cases. Reproduing the issues at Lab & Megawall. Analyzing the logs/evts, core dump analysis through debugger

·               Hands on  IXIA, RF snipper and Multi GDB debugger during testing and root-cause analysis

·               Integration & Dev support for Unit test environment, ported CUnit in integretity Development environment, debug command support for automated test activity

·                           Release closure with Lessons learnt and Best practices discussion

 

Motorola Inc, MA USA                                                                                                                   Aug 2006 – Jan 2008

Role        : Lead for Development, Integration and system Testing

Project    : Motorola Multi-Service Access Platform (MSAP) based on FTTx

Exposure: GPON/BPON (Motorola AXS2200), AXSVision EMS,  CPE, DWDM, MPEG Analysis, Video headhead devices & its configuration, Multicast, IGMP, QoS

Responsibilities:

·               Participated in Requirement analysis, design reviews, Integration and Functionality testing for Motorola GPON – AXS2200

·               Worked on GPON product related to IPTV and platform software changes to support new ONTs (CPEs). Have good understanding of IPTV configurations

·               Analyze the customer defects based on logs and develop test beds for reproducing and fixing the defects.

·               End-to-End Lab setup for testing triple play (Video, Data & Voice) using Motorola FTTP platform, Juniper Networks & other third-party vendor partners

·               Worked on protocols like VLANs, LCAP, STP,TCP/IP,OSPF,MPLS,BGP, Multicast protocols

·               Responsible for getting qualitty work from the team and co-ordination between offshore team and Motorola management.

 

Alcatel, TX USA,                                                                                                                             Dec 2005 – July 2006

Role        :  Developer, Unit & Integration Tester

Project    :  Alcatel 8686 SRP

Exposure: IN, SS7, TCAP, OSP-ME platform, IPNET (Alcatel Automation tool), C++

Responsibilities:

·               Involved in requirement analysis, design and implementation of new feature “Constant Monitor Probe “for Release 2.2

·               C++ based dev environment Implemented message logging and new alarm implementation for TCAP layer.

·                           Preparation of installation scripts for upgrading the new patches for field deployment

·                           Involved in the support activities, which includes fixing of bugs and testing.

 

Alcatel, CA USA                                                                                                                              Aug’1999 to Nov 2005

Role        :  Developer, Integration and System Testing

Project    :  Alcatel Litespan LS2000, LS2012, LS7201

Exposure:   Alcatel 7201, Alcatel LS2000 & LS2012, Alcatel AMS 5520, XML, JAVA, JUNIT, C++, CORBA, C, VxWorks, xDSL, SONET, ADSL2+, ATM, GR-303

Responsibilities for LS7201:

·               Development support for XML based on Data Modelling for xDSL applications

·               Developed xDSL application in Java and providing middleware services using IOCM( CORBA). The application includes handling specific facility creation, dynamic destination of profiles and handling specific business rules. Developed a CMA (Card Management Application) code in VxWorks and C.

·                        Developed scripts using PERL to make the system testing automate

·                        Responsible for testing APIs between entity, performance and finding memory leaks in the new Software Framework

·                        Working knowledge on the ADSL2+, ATM, SONET, Frame Relay and other xDSL technoologies

·               Worked on the Automatic Protection Switching, Performance Monitoring (PM), which includes the parameter like , CV (Coding Violations),ES (Errored Seconds) SES (Severely Errored Seconds)SEFS (Severely Errored Frame Seconds)

·                        Verified OC-3 and OC-12 and Fiber Channel Traffic .

·               Participate in Functionality, Sanity, Load testing and Software Upgrade activity

 

BEL LTD, Bangalore India,                                                                                                             Feb’1998 to July1999

Role        : Developer and Integration Testing

Project    : Driving Simulator              

Exposure: VC++ 5.0, SQL, Database (MS Access), Unit Testing, Debugging

Responsibilities:

·                           Provide support to SQL queries and Database changes for new features/modules

·                           Implemented GUI  for various rules for vehicle controls, it is used for exercise controls and monitoring

·                           Implemented I/O module interface between driver’s cabin and PC

·                           Implemented trainee evaluation module  for conduction on-line test for traffic rules/knowledge of vehicles

 

WORKSHOPS/TRAINING PROGRAMS ATTENDED

1.           VMWare Virtualization Training, Duration: 4 days

2.           Project Management Procedure (PMP) – 5 Days

3.           CCNA Training – 3 days

4.           CMTS (BSR64000) and DOCSIS and certfication from Motorola, USA - 7 days

5.           Leadership and business communication skills, Duration: 1 week

6.           Sun certified Java, Duration: 1 week

7.           OOAD  with UML and Design patterns – 1 day

8.           C++ External training, Duration : 2 Days

9.           VxWorks and BSP external training, Duration: 3 Days